Electric time mechanism.



S. G. RHODES. ELECTRIC TIME MECHANISM. APPLICATION FILED 001217, 1912,

1,120,241. Patented Dec. 8, 1914.

STATES PATENT car es;

SAMUEL c. RHQDEs, or NEWY RK, N. 'Y., ASSIGNOB. 'ro THOMAS E. MURBiAY, 01

NEW YORK, N. Y.

" ELECTRIC mechanism.

To all whom it may concern: 3,- Be itknown that I, SAMUEL G. R iolms, a citizen of the United States, residang at New -York in the county of New York and State .of blewlYoi'k, have invented a certain new and useful Improvement in Electric Time Mechanism,'of which the following is a specification.

\ The invention relates to an electric time mechanism, and consists in the circuit-com trollingdevice, associated with the pendulum} whereby .circuit to 'the motor-magnet, actuating said pendulum, is alternately broken and closed. 4 v a In the accompanying drawings--Figure 1 is a front, andFig. 2 a side-elevation, of my electrictime mechanism. Figs. 3 and 4 aredetailed views, showing two positions of-the pendulum and circuit-controlling de vice. Similar like parts. I

The motor-clertro-.magnet.1 is adjustable on the threaded "rod'2, projecting from the supporting back-board 3; The curved plate armature 4; of the magnet is disposed be low the same, and is carried by a bent ari n Ti, which is secured to a bar tipreferably of numbers of reference indicate insulating material, which bar 6 is sus-- pended by leaf springs 7 from a bar 8 truding from the back-board 3;

The bent arm 5, above its point of fastening to bar (3, is curved outwardly to clear the bar 8, and at its upper end carries pawl 9 which engages with a ratchet wheel 10. Near the lower bent over'end of arm 5 .there is an openingto receive a clamping I screw to secure the turned over extremity of the pendulum rod 11 on which is received the bob 12, movable up and down on said rod and adjustable thereon by means of the nut 13..

When the electro-magnet 1 is energized, it moves its armature 4, to the right, from the position shown in Fig. 3, to that shown in Fig. 4. thus causing the pawl 9 to engage with a toolh'of ratchet wheel 10 and turn said wheel. When the eleetro-magnet l is Specification of Letters Patent.

, ratchet teeth.

v Application filed 00mm 17, 1912. Serial No. 726,286.

Patented Dec. 8,1914.

deenergized, the backward swing of the pendulum causes pawl 9 to run over the The intermittent energizing of the magnet is accomplished by the following meansz' Supported on the bar 6'is.a wire frame 14, in which is placed a curi-ed glass tube 15, containing mercury. A circuit te'rmina'l16 enters said tube at one end for a-considen able distance. I ters said tube near the other end. Said terminals are connected to thebattery. 18,

A circuit terminal 17' enor other source of current, and the circuit" includes the coil of electro-magnet 1; W: hen the pendulum hangs vertically, as in Figs. 1 .and 2, the mercury is out of con tact with terminal 17, and the jmagnet is not energized. When the bob is swung to the left, as shown in Fig. 3, circuit is es"; tablisbed at terminals l7., an when said bob is swung to the right by the attraction of magnet 1 upon its armature 4, as in Fig. ,4, circuit is broken at said terminal 17.

Any suitable clock-train may be inter posed between ratchet wheel 10 and the shaftwhich actuates the clock-hands on thedial 19.

I claim: a

1. An electric time mechanism, compris-- ing a pendulum, a time train actuated thereby, an electromagnet, an armature for 1 said magnet supported on said pendulum,

a ring support on said pendulum, a'remow.

able bent tube containing mercury and having diverging arms separated foria distance greater than themaximum diameter of said ring and seated in said ring, and terminals entering and tube and in circuit with said magnet.

2. The combination witlr a clo-kWm-iii; I

having a ratchet-wheel, an insulated support, a flexible member secured to the sap:- port, a yoke carried by the flexible mem her, a pendulum carried by the ile3 ible member, a U-shaped tube containing merrury seated in said yoke and provided with terminals extending into the ends of the tube, one of said terminals being in con stant communication'withthe mercury, :1 arm adapted to hold the pawl against the magnet adapted to move the pendulum, a ratchet wheeL I w circuit having connection with the termi- In testimony whereof I have affixed my mils and with the magnet, and an upstandsignature in presence of two witnesses. ing curved spring arm secured to the fiexi- SAMUEL G. RHODES: ble member and having a. pawl pivoted Vt ltnessesz thereto to engage the ratchet wheel and hav-' GERTRUDE T. PORTER, ing a bearing atone end against the spring MAY T. MCGARRY. 

